The surge protector or UPS may not be allowing sufficient voltage
through to the printer. HP printers do not have built in speakers of any
kind. Because of this, they are not capable of making any beeping or
squealing sounds. If any noises such as these are heard then the printer
is probably connected to an Uninterruptible Power Supply (UPS) or a
backup battery. To verify that the UPS is the source of the noise, plug
the printer directly into a wall outlet bypassing the UPS.
The following are common symptoms:
High pitched squealing, beeping sounds, or alarms (UPS)
Noise over the phone line can also cause high-pitched squeals and beeping sounds.
Inexplicable or false error messages
Printer will not "wake up" from sleep mode
Printer appears to be DOA
Slower than normal printing
The printer control panel display is blank or shows garbled characters
Accessories, such as attached copier/scanners, do not function properly
Monitor loses power or shuts off
Computer reboots when job is printing
Job only prints half way, causing a paper jam
If it is necessary for the product to be connected to the above-mentioned devices, consider the following items:
are many UPS configurations and load conditions that can affect proper
printer operation. Depending on these configurations or load conditions,
printer functionality cannot be predicted.
No damage to current HP LaserJet
products will occur, but, depending on their particular UPS
configuration, the printer may or may not operate properly.
Printing while on a UPS battery backup is not recommended because of the large power requirements of HP LaserJet products.
If the HP LaserJet printer is not
operating properly and power line conditions are suspected, try a
different circuit (a different wall plug located away from the current
one), or try removing it from the UPS.
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